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Currency formats prior art

This page gathers information about existing practices and standards for representing currencies and currency-qualified numbers/amounts.


ISO 4127

ISO 4127 is an international standard for 3-letter currency codes.

Interactive Financial Exchange (IFX)

The IFX Forum develops a robust framework for the electronic business-to-business exchange of data among financial service institutions around the world".

Altough adapted to XML implementations, the IFX data model has been designed independently of XML technologies, so that it can be implemented using other representations than XML.

IFX defines the concept of a currency amount (CurAmt), which contains:

an amount (Amt), which is a decimal value
a currency code (CurCode), which is a 3-letter value defined in ISO-4217

Canadian dollar

Although the representation of a canadian dollar according to ISO-4127 is CAD, the most common representation of the currency according to some is CDN.

According to wikipedia:

There are various common abbreviations to distinguish the Canadian dollar from others: while the ISO currency code CAD (a three-character code without monetary symbols) is common, no single system is universally accepted. C$ is recommended by the Canadian government (e.g., per The Canadian Style guide) and is used by the International Monetary Fund, while Editing Canadian English indicates Can$ and CDN$; both guides note the ISO scheme/code. The abbreviation CA$ is also used, e.g., in some software packages.

Any of which can be marked up thus: C$ (or whatever "class" we eventually decide on) since any of them is a "symbol" representing CAD. - Andy Mabbett


Other standards exist for specific currencies.

See also